Experience

Kinetic Technologies
• United States
• Semiconductor Manufacturing
• 1 - 100 Employee
• Applications Engineer

  • Aug 2016 - Present


Avogy

• United States
• Semiconductor Manufacturing
• 1 - 100 Employee

• Power Supply Design Engineer

  • Oct 2015 - Aug 2016

  • Provided components cost down solution for Zolt charger. • Improved no load power for 70W Zolt Charger to meet CEC Level VI requirement. • Revised Zolt charger to 65W and 6 cubic inch solution for OEM Laptop charger. • Debugged EM Conducted Emission to meet EN55025 Class B requirement. • Provided components cost down solution for Zolt charger. • Improved no load power for 70W Zolt Charger to meet CEC Level VI requirement. • Revised Zolt charger to 65W and 6 cubic inch solution for OEM Laptop charger. • Debugged EM Conducted Emission to meet EN55025 Class B requirement.



Micrel

• Semiconductor Manufacturing
• 100 - 200 Employee

• Senior Applications Engineer

  • Sep 2014 - Aug 2015

  (Department eliminated after Microchip’s acquisition) • Work on DC to DC LED Driver (Buck mode) and USB load switches for consumer products. • Design new applications based on Micrel parts • Design AC-DC flyback converter using MIC38C42A. • Test and valuate new ICs (Department eliminated after Microchip’s acquisition) • Work on DC to DC LED Driver (Buck mode) and USB load switches for consumer products. • Design new applications based on Micrel parts • Design AC-DC flyback converter using MIC38C42A. • Test and valuate new ICs



Linear Technology

• United States
• Semiconductors
• 500 - 600 Employee

• Associate Applications Engineer

  • Jul 2011 - Aug 2014

  • Work on DC to DC LED Driver for consumer products and automotive headlight using Buck/Buck Mode/Boost (LT3756, LT3761, LT3796, LT3795) and Buck-Boost (LT3791, LT8705) topologies with short circuit protection and analog/PWM dimming ability. • Work on 100W+ Voltage Regulator using Buck-Boost (LT3791-1, LT8705) topology. • Help senior application engineers to build prototype circuits • Setup and check EMI Conducted Emission according to CISPR 25 • Develop, debug and optimize circuits (Bode Plot and Transient Response) • Evaluate new ICs • Collect test data and generate test reports for FAE and customers Show less



Phihong USA

• United States
• 1 - 100 Employee

• Power Supply Design Engineer

  • 2007 - 2009

  • Worked with customer to design specification and provide solutions. • Debugged EM Conducted and Radiated Emission for switching power supply adapter to meet EN55025 Class B requirement. • Designed a 20W wall-mount switching power supply adapter using fly-back topology and Richtek R7731A controller which meets Energy Star 2.0 efficiency requirement. • Designed a 40W wall-mount AC-DC adapter for Bose SoundDock Portable using fly-back topology and Power Integration TOP257EN controller. The unit meets Energy Star 2.0 efficiency requirement and operates with low Electromagnetic Conducted Emission and Radiated Emission(EMI). • Designed on a 36W desktop AC-DC adapter for Bose SoundDock II using fly-back topology and Power Integration TOP245YN controller. The unit meets 0.4W no load efficiency requirement and operates with low Electromagnetic Conducted Emission and Radiated Emission(EMI). • Conducted all safety testing as stated in UL-60950 on switching power supply adapters for Underwriters Laboratories, Inc. Client Test Data Program. • Performed CEC, MEPS and Energy Star 2.0 efficiency testing and generated efficiency reports. • Conducted design verification testing and second source testing and provided test report to confirm if the design/second source component is applicable. • Performed Voltage Dips and Sags Test(EN:61000-4-11), Surge Test(EN:61000-4-5), Electrical Fast Transient Test(EN:61000-4-4) and Electrostatic Discharge Test(EN:61000-4-2) to confirm switch power adapter’s immunity performance. Show less